D38999/24WE6SN | 6-Socket Series III Jam Nut Receptacle (Size 17)
The D38999/24WE6SN is a size 17 MIL-DTL-38999 Series III jam nut receptacle with 6 heavy-duty socket contacts. Features “W” olive drab cadmium finish and “N” polarization for power grids.
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D38999/24WE6SN Efficiency of Single-Hole Jam Nut Mounting in Size 17 Shells
The D38999/24WE6SN is a precision-engineered interconnect solution designed for specialized electronic grids where assembly speed and panel space conservation are primary design constraints. Utilizing the size 17 aluminum alloy shell, this Type 24 jam nut receptacle requires only a single D-shaped cutout in the equipment bulkhead. This design significantly simplifies the machining process compared to traditional square flange models and minimizes potential ingress points for environmental contaminants. The use of a single high-torque hex nut to secure the housing ensures a stable and permanent mount, making it an ideal choice for compact power distribution units and localized control modules where internal volume is at a premium.
Key Specifications
Shell Material | Voltage Rating | Current Rating | Operating Temp | Ingress Protection | Mating Cycles | Keying & Polarization | Coupling |
|---|---|---|---|---|---|---|---|
Aluminum alloy | ~1000 VAC | ~23 A | -65 °C to +200 °C | IP67 | 500 | N | threaded coupling |
Tactical Environmental Defense and Shell Conductivity
The “W” class finish of the D38999/24WE6SN represents a high-strength aluminum housing treated with olive drab cadmium over an electroless nickel underplate. This multi-layered defense system is specifically engineered for the most aggressive field environments, providing a certified 500-hour salt spray rating. Beyond its superior corrosion resistance, the cadmium finish is highly conductive, allowing the shell to act as a critical extension of the equipment ground. This ensures high-performance EMI and RFI shielding for the six internal conductive lines, protecting the power grid from electromagnetic interference in dense electronic clusters and unpressurized aerospace compartments.
Universal N-Keying and Secure System Integration
The D38999/24WE6SN utilizes the standard “N” (Normal) polarization keyway, which is the industry-default indexing configuration for Series III connectors. This ensures maximum intermateability with any standard-issue Series III plug of the same shell size and layout, facilitating easy integration into global aerospace and defense supply chains. The triple-start threaded coupling mechanism provides a self-locking connection that is inherently resistant to loosening under severe harmonic vibration. This standardized indexing logic ensures that the D38999/24WE6SN delivers a familiar and reliable mating experience for technicians during rapid field maintenance and initial assembly cycles.
Optimized Power Fidelity and 17-06 Layout Integrity
Within the size 17 housing, the D38999/24WE6SN employs the 17-06 insert arrangement, providing six independent conductive channels using Size 12 socket contacts. The socket design provides a secure female interface that protects the internal electrical connection from external contamination and mechanical shock. These Size 12 contacts are much larger than standard signal pins, allowing them to carry significantly more electrical current while offering increased mechanical durability. The high-performance dielectric insert ensures superior insulation resistance, preventing electrical leakage between the six power channels even in environments subject to rapid temperature fluctuations and atmospheric changes.
Mechanical Protection and Field Maintenance Reliability
The structural reliability of the D38999/24WE6SN is further supported by its 100% scoop-proof shell architecture. This design ensures that the six socket contacts are recessed deeply enough within the housing to prevent any bending or damage if the mating plug is misaligned or tilted during the connection process. For long-term field support, the receptacle utilizes a rear-release crimp contact system, allowing maintenance technicians to install or replace individual sockets using standard military tools without disassembling the entire unit from the panel. This combination of physical protection and modular serviceability ensures the D38999/24WE6SN provides a low total cost of ownership for mission-critical power grids.
FAQ
How many contacts are provided in the D38999/24WE6SN?
How many contacts are provided in the D38999/24WE6SN?
The 17-06 layout features six independent conductive channels using Size 12 socket contacts, optimized for medium-to-high current power and heavy-duty signal transmission.
What are the advantages of the Jam Nut (Type 24) mounting style?
What are the advantages of the Jam Nut (Type 24) mounting style?
Jam nut mounting simplifies panel preparation by requiring only a single hole, and it provides a secure, high-torque attachment that is ideal for compact and weight-sensitive equipment.
Does the Olive Drab Cadmium finish provide EMI shielding?
Does the Olive Drab Cadmium finish provide EMI shielding?
Yes, the “W” finish is highly conductive, facilitating a reliable low-impedance ground path between the shell and the chassis for superior electromagnetic interference suppression.
Is the D38999/24WE6SN compatible with standard Series III plugs?
Is the D38999/24WE6SN compatible with standard Series III plugs?
Absolutely. As long as the mating plug is size 17, has the 06 layout, and uses standard “N” polarization, it will be fully intermateable with this receptacle.
Can this connector handle high-vibration aerospace use?
Can this connector handle high-vibration aerospace use?
Yes, the self-locking triple-start threads and the secure jam nut mounting are specifically engineered to maintain electrical and mechanical integrity under extreme vibration and shock.
Certification
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